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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops `do ... while` Loops

Sergey Scherbo
Sergey Scherbo
5,784 Points
Posted by Sergey Scherbo
Sergey Scherbo
5,784 Points

I really dont understand why

Why we can't go like this:

do { guessNum = prompt("Please, guess the number"); } while (parseInt(guessNum) === randomNum);

I really don't understand why it doesn't work.

3 Answers

Juan Martin
Juan Martin
14,335 Points
Juan Martin
Juan Martin
14,335 Points

Hey there!

The code looks good, though there's a little logical mistake at the end, the loop should keep going until the number is guessed so:

while (parseInt(guessNum) !== randomNum);

Hope this helps!

egaratkaoroprat
egaratkaoroprat
16,630 Points
egaratkaoroprat
egaratkaoroprat
16,630 Points

Hi Sergey

I suggest that you check your while condition again. As it is right know, it will run as long as you guess the correct number. If it is wrong, then the loop breaks.

Egarat

samiul islam
PLUS
samiul islam
Courses Plus Student 1,104 Points
samiul islam
samiul islam
Courses Plus Student 1,104 Points

Can Someone tell me what's wrong with this code block.

var randomNumber = getRandomNumber(2);
var guess;
var guessCount = 0;

function getRandomNumber( upper ) {
  var num = Math.floor(Math.random() * upper) + 1; 
  return num;
}

do{
  guess = prompt("Please guess a number between 1 to 2.");
  guessCount += 1;
}while(parseInt(guess) !== randomNumber);

document.write("<p>" + "You took " + guessCount + " attempts to guess the right number." + "</p>");